Polishing machine



G. A. CARLSON. POLISHING MACHINE. APPLIfiATION FILED AUG-l9, 1920.

Patented Oct. 3, 1922.

3 SHEETS-SHEET G. A. CAHLSON.

POLISHING MACHINE. APPLICATION FILED AUG. 19. 1920.

1,430,624 Patented 001;. 3, 1922.

3 SHEETS-SHEET Z.

e. A. CIARLSON.

POLISHING MACHINE. APPLICATION FILED AUG. 19. 1920.

Patented Oct. 3, 1922.

v 3 SHEETSSHEET 3.

J G L/5%??? Patented @et. 3, 11922.

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GUSTAVE A. GI-LRLSON, OF DETROIT, MICHIGAF'.

PULISHING hflAGT-IIIIE.

Application filed August 19, 1920. Serial No. 4104,6423.

T 0 all whom it may concern.

v Be it known that l, Gus'rnvn A. Camisole, a citizen of the United States of America, residing at Detroit, in the county of Viayne and State of Michigan have invented certain new and useful Improvements in Polishing Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to polishing or butting machines and has for its object the provision of means for holding work in contact with the polishing means while moving the work in a path lengthwise of the median line.

With the apparatus disclosed'in my present invention, work that hitherto has been held byhand during the polishing operation may be placed in a work-holding chuck and carried in the desired path by the operation of a simple and effective guiding means so with a minimum of hand labor.

In the drawings:

Figure. 1 is a side elevation of my improved device, showing the relation of the work holding device to the boiling wheel;

Fig. 2 is a fragmentary sectional view taken through the work holder on the line 2-2 of Fig. 6;

Fig. 3 is a horizontal section on the line 3--3 of Fig. 6;

Fig. 4 is a front elevation, part of the work holder being broken away;

Fig. 5 is ,a front elevation of the work holder with two pieces of work in position, parts being broken away;

Fig. 6 is a side elevation similar to Fig. 1, on a larger scale, parts being in section;

Fig. 7 is a rear elevation of the work holder on a scale half that of Fig. 5, and

Fig. 8 is a perspective view of the piece of work taken as an illustrative example.

My improved device comprises a suitable supporting base or standard 1 having a head 2 slidably mounted thereon for adjustment toward and from the polishing wheel 3. This adjustment may be made by meansof the screw 4 and hand wheel 5, as is familiar.

An electric motor 6, mounted on the top of the head 2, serves to drive the pulley 7, worm 8, worm gear 9, and shaft 10 in an obvious manner. Secured to the end of the shaft 10 remote from the gear 9, is a spur gear 11 protected by a shield or guard 12 in which are mounted guiding rollers 13.

In an extension 1 1 of the guard member 12, 1s ournaled the guide member 15. which consists of a cylindricaljournal portion 16 haying its bearing intho ex ension A, an enlarged head provided with guide slots 17. and a limiting stop 18 formed as a rounded stud coaxial with the journal portion 16.

The work holder 19 consists of a face place 20, a rack section :21, secured to the face plate, as by screws 2:2, and guides formed to the slots 1? in the guide member 15. These guides may be secured to the gear section 21 by any suitable means, as screws When tl e iOlCl-dl is in position on its supporting'guioe member 15, the teeth of the rack section 21 are in mesh with the teeth of the gear i. and the guides 23 engage the slot 17. As the gear 11 revolves, the work holder will he lifted from the position shown i in Fig. t until the curved lower end of that the polishing operation is accomplished the rack section reaches the horizontal pl no through the centers of the end of shaft 10 and the stop 18. the rollers 13 in contact with the outer edges of the guides assisting in keeping the work holderfr. m. tilting. As the curved end of the rack section 21 is engaged. by the gear 11. the top of the work holder will swing to one side and when the curved portion has been carried past the gear 11, the parts will again appear as shown in 4:.

The work 25 is secured upon the face plate by any suitable chuck or clamping means. For tubular work such as the piece shown in F 8. the form of chuck shown in Figs. 2. 5 and 6 has been found entirely satisfactory in practice.

The chuck 26 is secured to the face plate 20 by screws and is pr vided with projecting pins 28 to enter corresponding holes in the cooperating chuck member 29. A set screw 30 threaded in an opening in the outer chuck member and bearing against the inner member, acts to force the members apart and into clamping engagement with the in side of the tubular ends of the work 25, thus holding it securely in place on the face plate during the polishing operation. In cases where the work has elevated portions. such as collars shown in the illustrative example in Fig. 8, a shim or supporting member 31, may be used to hold the surface of the work approximately parallel with the face plate.

The operation of my device will be obvious from the description. When the work has been clamped in place on the work holder, with its median line substantially parallel with the rack and the head 2 adjusted to bring the work sufficiently in contact with the butling wheel, the motor 6 is started, and by its rotation of the shaft 10 and gear 11, the work holder is moved along a path determined by the course of the guides 23, the teeth of the rack section 21 being in mesh with the teeth of the gear 11, and the guides 23 acting to direct the motion of the work holder.

It is obvious that the work holder may be modified in many ways to suit work of various configurations, and that by the selection of guide members 23 and racks 21 designed to conform to variations in the contour of the pieces to be polished, a wide range of work can be handled rapidly and effectively.

What I claim is p l. A work holder comprising a rack having straight portions connected by curved portions, a driven gear in mesh with the rack, means for holding work in a fixed relation to the rack, and means cooperating with the rack to guide its movements while it is driven by the 2. A work holder comprising a rack hav ing two parallel portions connected at their ends by curved portions, a driven gear in mesh with the rack, means for holding work with portions disposed substantially parallel with portions of the rack, and guiding means cooperating with the rack to guide its movements while driven by the gear.

3. A work holder comprising a rack having two straight portions connected by semi-circular portions, work-holding chucks adapted to secure work on the holder with portions disposed substantially parallel with portions of the rack, guides secured to the rack, a driven gear in mesh with the rack, and a guide member cooperating with the guides to control the movement of the work holder.

4. A machine for presenting work to a polishing device comprising a base, a head adjustably mounted on the base, a motor on the head, a shaft driven by the motor, a gear on the shaft, and a work-holding device having a rack portion in mesh with the said gear, the arrangement being such that work mounted on the work-holding device is moved in a noncircular path when presented to the polishing device.

5. A machine for presenting work to a polishing device comprising a base, a head adjustably mounted on the base for movement toward and from a polishing device, a motor on the head, a shaft driven by the motor, a gear on the shaft, a work holding device having a rack in mesh with the gear, said rack having straight portions and curved portions, means holdingwork with portions disposed substantially parallel with portions of the rackand guiding means con trolling the movements of the work holding device.

In testimony whereof I afliX my signature in presence of two witnesses.

GUSTAVE A. GARLSON.

Witnesses ARTHUR MINNIOK, H. C. Unonnwoon. 

